Early morning of 7. January 2023 an earthquake swarm took place in Brennisteinsfjöll volcano. All of the earthquakes are small in magnitude and largest earthquake had a automatic magnitude of Mw1,0. Depth of this earthquakes is from 7 km and down to 9,5 km depth.
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Ongoing earthquake swarm in Reykjanes volcano (close to Reykjanestá)
Today (6. January 2023) an earthquake swarm started in Reykjanes volcano close to Reykjanestá area. Largest earthquake had a magnitude of Mw3,0 at 00:31 UTC. Other earthquake have been smaller in magnitude.
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Earthquake swarm in Reykjanes volcano
Yesterday (26. December 2022) an earthquake swarm took place in Reykjanes volcano. Just on the Reykjanestá area. This earthquake swarm was mostly in the ocean and on the Reykjanes ridge but some earthquakes where on the Reykjanes peninsula on land.
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Earthquake swarm continues 47 km east of Fonti in Eastern Iceland
During the night and today (18. December 2022) the earthquake swarm around 47 km east of Fonti in Eastern Iceland continued. Largest earthquake at the writing of this article had magnitude of Mw3,3 but another and few smaller earthquakes, but with magnitude of Mw3,1 took place in the same location. Several earthquakes with magnitude above Mw2,5 also took place.
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Earthquake swarm east of Iceland (45 km east of Fonti)
Today (15. December 2022) an earthquake swarm has been going around 45 km east of location known as Fonti in eastern Iceland. This location is out in the ocean and its unclear why this earthquake activity is happening. There are no volcanoes in this part of Iceland and no known fault areas. Since this is among the oldest parts of Iceland.
Largest earthquake in this swarm recorded so far, had the magnitude of M2,9. Distance from the SIL network prevents detection of smaller earthquakes in this area.
There is a risk of stronger earthquakes in this area. If this earthquakes are going to be felt in populated areas is unlikely unless this earthquake activity gets really big. Since this earthquake activity is far from the coastline and there’s almost no population in this parts of Iceland.
Earthquake pulses in Katla volcano
Today (27-November-2022) two pulses of earthquake activity took place in Katla volcano. No eruption happened following this earthquake activity. This earthquake activity is interesting but it is unclear what is going on. This can be normal earthquake activity in Katla volcano, even if the earthquakes are larger than normal or this is a step that is going to result in an eruption happening in the future. At the moment, there’s no way to know what is the fact here. The earthquake pulses did come in two activity spikes, the first one started at 03:41 and lasted until 03:53 UTC. The second earthquake pulse did come at 11:48 and lasted until 12:12 UTC.
The largest earthquakes had a magnitude of Mw3,0 and Mw3,1 and Mw3,4. This is not a dyke intrusion of magma. Such activity behaves differently in a volcano than just surface level earthquake activity as took place in Katla volcano. Based on what I am seeing, it is possible that more earthquake pulses like this are going to happen in next few days or weeks.
Strong earthquake swarm in Öræfajökull volcano
Today (23-November-2022) at 10:04 UTC an earthquake with magnitude Mw3,1 took place in Öræfajökull volcano. According to the news and Icelandic Met Office, this is the largest earthquake in Öræfajökull volcano since the year 2018. This earthquake was felt on nearby farms. There is no town close to Öræfajökull volcano. A smaller earthquake with magnitude of Mw2,6 was also felt in the nearby area. A swarm of smaller earthquakes also took place inside Öræfajökull volcano caldera. Bad weather in south Iceland is preventing detection of all the earthquake activity in Öræfajökull volcano.
Öræfajökull volcano last time had this type of earthquake activity in the years 2018 and 2019 when it started to quiet down again. There are signs that magma is moving inside the volcano. When and if that is going to result in a eruption is impossible to know.
Strong earthquake swarm in Katla volcano (22-November-2022)
Today (22-November-2022) a strong earthquake swarm started in Katla volcano at 19:55 UTC. Strongest earthquake had a magnitude of Mw4,4. One Mw3,5 earthquake was recorded with several smaller earthquakes. Magnitudes and number of earthquakes are changing. This is an updated text of the earthquake magnitude.
What is going on is unclear at the writing of this article. At the writing of this article I am not seeing any change in harmonic tremor, but that might change without warning. I’ll post updates if anything more happens in Katla volcano.
Added: I added the donate buttons back if people want to support my work. I had to remove them because of a increased fraud risk in October and that might be ongoing risk.
Article updated at 21:16 UTC.
Article updated at 23:06 UTC.
Earthquake swarm in Kolbeinsey island (north of Grímsey island)
Today (22-November-2022) an earthquake swarm took place in Kolbeinsey island. This is far north of Grímsey island. Largest earthquake had a magnitude of Mw3,1 and total of four of those earthquakes happened. More than dozen smaller earthquakes have happened. Because how far this activity is from Icelandic Met Office SIL network only the largest earthquakes are being measured.
What is going on is unclear. This might just be normal tectonic activity for this area. There is only poor monitoring of this area since its out in the ocean and remote.
Small earthquake swarm in Katla volcano (yesterday 19-November-2022)
Yesterday (19-November-2022) at 21:13 UTC an earthquake swarm started in Katla volcano. This was a small earthquake swarm with just few earthquakes, but it had an earthquake with magnitude of Mw3,2 taking place at 21:13:05. Just before and after this earthquake fewer smaller earthquakes took place.
Since this earthquake activity stopped, everything has been quiet in Katla volcano.